related-product-inchHMBL4MP Steel Ball HMBL
STEEL BALL HMBL Product Overview
HMBL4MP is a high-misalignment steel ball with 0.2500″ bore (B), 0.593″ ball diameter (D), 0.390″ outer diameter at equator (O), 0.593″ body width (W), and 0.015″ chamfer (K).
Made from 52100 bearing steel — precision ground, heat treated, and hard chrome plated. The HMBL series uses a larger-diameter ball relative to bore size compared to standard CBL-DP balls, allowing greater misalignment angle before the ball contacts the housing edge. Used in high-misalignment rod end housings (YPB, SLB-style) and in custom assemblies where increased angular travel is required. 440C stainless steel option available.
440C stainless steel option available. Standard bore ball replacement: CBL-DP series. Sold individually; verify housing race geometry before installation.
STEEL BALL HMBL Series — Full Size Range
All available sizes in the STEEL BALL HMBL series. Can’t find your size? Contact us for custom dimensions.
| Part Number | D +0.005 -0.005 | B +0.0025 -0.0025 | O +0.002 -0 | W +0 -0.005 | K +0.01 -0 |
|---|---|---|---|---|---|
| HMBL3MP | 0.437 | 0.1900 | 0.319 | 0.500 | 0.015 |
| HMBL4MP | 0.593 | 0.2500 | 0.390 | 0.593 | 0.015 |
| HMBL5MP | 0.593 | 0.3125 | 0.418 | 0.625 | 0.015 |
| HMBL5MP-1 | 0.781 | 0.3125 | 0.512 | 0.813 | 0.015 |
| HMBL6MP | 0.781 | 0.3750 | 0.512 | 0.813 | 0.015 |
| HMBL7MP | 0.875 | 0.4375 | 0.618 | 0.875 | 0.015 |
| HMBL8MP | 1.000 | 0.5000 | 0.730 | 0.937 | 0.015 |
| HMBL10MP | 1.250 | 0.6250 | 0.856 | 1.200 | 0.015 |
| HMBL12MP | 1.375 | 0.7500 | 0.970 | 1.280 | 0.020 |
| HMBL14MP | 1.531 | 0.8750 | 1.140 | 1.400 | 0.020 |
| HMBL16MP | 1.875 | 1.0000 | 1.278 | 1.875 | 0.020 |
| HMBL20MP | 2.250 | 1.2500 | 1.523 | 1.875 | 0.020 |
| HMBL24MP | 2.672 | 1.5000 | 1.800 | 2.250 | 0.020 |
Every Unit Inspected Before Shipment
Raw Material Inspection
Material certifications verified. Composition confirmed by spectrometer before machining begins.
Thread Gauge Inspection
100% go/no-go gauge check on all threaded sections. Zero tolerance on dimensional non-conformance.
Load Capacity Test
Static and dynamic load tests run on representative samples from each production batch.
Dimensional Measurement
CMM verification of critical dimensions — ball diameter, bore, thread pitch, and body length.
Surface Inspection
Visual and tactile inspection for burrs, scratches, surface cracks, and plating defects.
Articulation Test
Misalignment angle and torque measured to confirm liner performance meets specification.
Heat Treatment Verify
Hardness tests confirm proper heat treatment on chromoly steel bodies and bearing balls.
Batch Documentation
Full traceability from raw material heat number to finished part. COC and inspection reports available.
Where STEEL BALL HMBL Are Used
More from the STEEL BALL HMBL Series
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STEEL BALL HMBL Frequently Asked Questions
What is the HMBL steel ball series used for?
HMBL steel balls are high misalignment spherical replacement components used in rod end and related joint hardware.
What material is standard for HMBL steel balls?
The standard material is 52100 bearing steel, with 440C stainless available for special requirements.
What treatment is applied to HMBL steel balls?
The series is heat treated and hard chrome plated to improve wear resistance and service durability.
Why choose a high misalignment steel ball?
High misalignment steel balls help increase articulation range in rod end and spherical joint hardware.
Can I request non-standard HMBL sizes?
Yes. Special sizes are available in volume for custom rebuild and production programs.
How do I choose the correct HMBL size?
Start by matching D and B dimensions, then confirm O, W, and K against the intended hardware package.